ABSTRACT
INTRODUCTION This chapter starts with the concept of electric current and voltage, introduces basic terminology and shows how networks are drawn. It gives a brief overview of all linear elements which are used in the network theory, plus a few of the most important practical devices. After this informal explanation we give definitions of the independent current and voltage sources, of resistors, of power delivered or consumed. Three fundamental laws are stated: the Ohm’s law and the Kirchhoff’s current and voltage laws. Based on this knowledge we study the voltage and current dividers and also explain how to obtain equivalent resistances for combinations of resistors.
